For Kadon's 35th Anniversary celebration, 2014-2015, we embedded the number 35 into a special edition of Poly-5. A grid card with Poly-5's basic tray pattern (right) is included. And because 35th anniversaries are traditionally "jade," the frame and number were a marbleized green acrylic as well. The puzzle pieces are transparent Lucite. This commemorative style was offered during 2014 only, with a 15x15 game grid and 52-page instruction book included.